diff --git a/assets/javascripts/app.js b/assets/javascripts/app.js
index 70556ae..9fe7eef 100644
--- a/assets/javascripts/app.js
+++ b/assets/javascripts/app.js
@@ -22,7 +22,7 @@ var debounce = function(callback, wait) {
 }
 
 var sanitize = function(content, base) {
-  // NOTE: `item.link` is not always a valid url
+  // WILD: `item.link` is not always a valid url
   try { new URL(base) } catch(err) { base = null }
 
   var sanitizer = new DOMPurify
diff --git a/server/crawler.go b/server/crawler.go
index 8929cb3..cf103ab 100644
--- a/server/crawler.go
+++ b/server/crawler.go
@@ -94,7 +94,7 @@ func discoverFeed(url string) (*gofeed.Feed, *[]FeedSource, error) {
 	feedparser := gofeed.NewParser()
 	feed, err := feedparser.Parse(bytes.NewReader(content))
 	if err == nil {
-		// WILD: some feeds do not have link to itself
+		// WILD: feeds may not always have link to themselves
 		if len(feed.FeedLink) == 0 {
 			feed.FeedLink = url
 		}
diff --git a/storage/item.go b/storage/item.go
index ac7681b..27eac2b 100644
--- a/storage/item.go
+++ b/storage/item.go
@@ -73,9 +73,11 @@ func (s *Storage) CreateItems(items []Item) bool {
 	now := time.Now()
 
 	for _, item := range items {
+		// WILD: some feeds provide only `item.date_updated` (without `item.date_created`)
 		if item.Date == nil {
 			item.Date = item.DateUpdated
 		}
+		// WILD: `item.guid` is not always present
 		if item.GUID == "" {
 			item.GUID = item.Link
 		}